I haven't watched the video yet. Here's my take.
The One Ring is quite literally the God in the Machine. The will of the Ring is to be returned to Sauron. If it is cast into the sea it would be found. It would get swallowed by a fish, which is subsequently caught and brought the lands of Men. It would be found by a pearl diver. It would be snagged by an anchor. Ocean currents would bring it within reach of the shore, and it would be discovered in a tidal pool. It. Would. Be. Found.
Now, I'm off to watch that video, brb
And I'm back. I was partly right! The creator makes some other very good points and I won't spoil it by enumerating them here. Suffice to say Gandalf was not a modern CEO or politician, and took the long view. Good quotes from the books, and a great analysis